emerging · 1.2

Registration

Score 23.2 / 100 66 providers 60 APIs Search apis.io →
Variants seen in the corpus: Registrationregistration

Providers using this tag (66)

Ranked by API Evangelist rating — Exemplar and Strong are expanded by default.

Exemplar 3 Complete, well-documented, and agent-ready
SalesforceFortune 500Artificial IntelligenceAnalyticsCloud294 APIs83.3Cvent Event CloudAttendee HubAttendeesBulkContacts42 APIs69.6GoTo WebinarWebinarsVirtual EventsVideo ConferencingMarketing9 APIs67.8
Strong 7 Solid coverage with minor gaps
AvalaraTaxes73 APIs63.6Consumer Data Right (Energy)EnergyAustraliaUtilitiesElectricity6 APIs63.4GitHubCodePipelinesPlatformSoftware Development350 APIs62.4CloudflareAI GatewayAPI GatewayArtificial IntelligenceCDN87 APIs62.0Oracle Health (Cerner)Bulk FHIRCapabilityStatementCareAwareCerner Millennium13 APIs60.7GoFundMeFundraisingNon-ProfitCrowdfundingDonations72 APIs57.7WebinarJamWebinarsMarketingLive EventsAutomated Webinars2 APIs54.9
Developing 18 Usable, with meaningful gaps to close
IESOEnergyCanadaElectricityEnergy Markets9 APIs50.4DemioCompanyWebinarsVirtual EventsEvent Management3 APIs50.3WhatsApp17 APIs49.9HankoAuthenticationPasskeysWebAuthnFIDO222 APIs48.1DeliverartCompanyFood DeliveryRestaurantOrder Management16 APIs45.9CventAttendee HubAttendee ManagementConferencesDiagramming16 APIs45.4Active NetworkCompanyEventRecreation2 APIs44.0On24CompanyWebinarsVirtual EventsDigital Engagement1 API43.9B3 (Brasil Bolsa Balcão)FinancialMarket DataStocksTrading10 APIs43.4AgentPhoneCompanyTelephonyPhone NumbersSMS13 APIs43.1StellarBlockchainCryptocurrencyDecentralized ExchangeLedger33 APIs43.0IndeedCareersEmploymentHiringJob Search15 APIs42.7Microsoft .NET.NETC#CloudCross-Platform9 APIs41.9RingCentral EventsEventVirtual EventsHybrid EventsWebinars14 APIs41.3EventzillaEventTicketingAttendees7 APIs41.0SignalEncryptionMessagingSecurityCryptography14 APIs41.0AcceleventsEvent ManagementTicketingEvent5 APIs39.9RentberryReal-EstatePropTechRentalsRental Marketplace46 APIs39.3
Thin 23 Limited public surface area
MavenirTelecommunicationsUnited StatesNetwork VendorNetwork APIs3 APIs39.2Digital Public Library of AmericaCultural HeritageLibrariesArchivesMuseums5 APIs37.3SynapseChatCollaborationDecentralizedFederation9 APIs37.2Ticket TailorEvent TicketingEventTicketingBox Office8 APIs37.2Cvent RegistrationAttendee ManagementAttendeesConferencesEvent Management9 APIs36.9NuGetPackage Management.NETPackagesDependencies7 APIs36.9SPIREAuthenticationCloud-NativeGraduatedIdentity5 APIs36.8AttendeaseCompanyEventEvent ManagementEvent Marketing2 APIs35.3TicketSpiceEvent TicketingTicketingEvent10 APIs35.1DeliverectRestaurantDeliveryOnline OrderingPoint-of-Sale30 APIs34.7Cvent PlatformAttendee HubConferencesEvent ManagementEvent Marketing9 APIs34.5Quantum ArtCompanyQuantum ComputingQuantum as a ServiceQiskit24 APIs33.6ActivityHeroCompanyKids ActivitiesCampsClasses1 API32.7BrushfireEvent TicketingEventTicketing16 APIs32.6University of WashingtonEducationHigher EducationUniversityResearch29 APIs31.5Microsoft PackageAzure ArtifactsMicrosoftNuGetPackage Management8 APIs30.4Civil Aviation Safety Authority (CASA)TravelAustraliaAviationAirports3 APIs30.0XfersPaymentsFintechBank TransfersDigital Wallet20 APIs28.2GigacatalystCompanyArtificial IntelligenceSoftware-as-a-ServiceSales Enablement1 API27.4ClustersCompanyInfrastructureIdentityNaming6 APIs26.7Spring Boot Admin ConsoleActuatorAdministrationJavaMicroservices7 APIs26.6PagBankPaymentsDigital BankingBrazilPix6 APIs26.5TitoEvent TicketingEventTicketing10 APIs26.4
Emerging 11 Early or largely undocumented
AthenianCompanyEngineering IntelligenceSoftware Development AnalyticsDeveloper Productivity16 APIs25.7Cosmose AIRetail Intelligenceoffline-analyticsLocation IntelligenceAdTech1 API23.7BizzaboEventEvent ManagementB2B EventsConference Management1 API22.5EventMobiEventEvent ManagementEvent AppsAttendees5 APIs22.1EigenDABlockchainData AvailabilityEthereumRestaking5 APIs20.3University of California, Santa BarbaraEducationHigher EducationUniversityStudent Information System7 APIs19.7Annex CloudLoyaltyCustomer RetentionRewardsPoints12 APIs19.5Xcel EnergyElectric UtilityEnergyEnergy DataGreen Button29 APIs18.1Open Podcast APIAudioEpisodesOpen StandardsPodcasts6 APIs13.9TJX CompaniesRetailOff-PriceFortune 100Supply Chain2 APIs13.4WhovaEventEvent ManagementEvent App2 APIs12.5
Minimal 4 Almost no public developer surface
BoletiaCompanyTicketingEventEvent Management10.7Federal Aviation AdministrationAviationFederal-Government6 APIs10.4PhreesiaHealthcarePatient IntakePatient RegistrationPatient Engagement5 APIs9.2ClearwaveHealthcarePatient AccessRevenue CyclePatient Check-In5 APIs6.7

APIs with this tag (60)

Ranked by the provider's API Evangelist rating — the Kin Score is scored per provider, not per API, so every API of a provider shares its band. How the rating works →

Exemplar 3 Complete, well-documented, and agent-ready
Salesforce Registration APIThe Registration API from Salesforce — 4 operation(s) for registration.83.3Salesforce REST APIThe Salesforce REST API provides a simple and powerful web service interface to interact with Salesforce or...83.3Cvent Platform REST API (Event Cloud)RESTful API for managing events, contacts, registrations, attendees, sessions, speakers, exhibitors, survey...69.6
Strong 8 Solid coverage with minor gaps
License Guidance Order APIThe Avalara License Guidance Order API enables placing Avalara License Guidance orders and populating quest...63.6CDR Dynamic Client Registration APIThe onboarding contract. Rather than a developer portal issuing keys, an accredited data recipient presents...63.4GitHub Registration APIThe Registration API from GitHub — 2 operation(s) for registration.62.4Cloudflare Registrar APIThe Cloudflare Registrar API allows developers to manage domain registrations at cost. It provides endpoint...62.0Oracle Health Code Console (Developer Portal)The Oracle Health Code Console (formerly Cerner Code) is the developer portal used to register SMART on FHI...60.7GoFundMe Registration APIRegistration records show information pertaining to event attendance, either through a ticket purchase or b...57.7EverWebinar APIREST API for managing EverWebinar automated and evergreen webinars — list webinars, read one webinar's deta...54.9WebinarJam APIREST API for managing WebinarJam live webinars — list all webinars, retrieve one webinar's schedules, prese...54.9
Developing 18 Usable, with meaningful gaps to close
IESO Registration System Facilities APIA REST API on the Appian-based Online IESO platform for retrieving and maintaining facility registration da...50.4Demio Events APIEvents, Event Sessions (Dates) and attendee registration. List and read Events, read a specific Session, an...50.3WhatsApp Registration APIRegister and deregister phone numbers49.9Hanko Flow APIThe Hanko Flow API powers structured authentication flows including login initialization and advancement, r...48.1Deliverart Registration APIThe Registration API from Deliverart — 3 operation(s) for registration.45.9Cvent Custom Widgets APIThe Cvent Custom Widgets API allows developers to build custom interactive widgets for Cvent Event Registra...45.4Cvent Passkey RegLink APIPasskey RegLink APIs are RESTful JSON APIs (with legacy URL-based and SOAP options) connecting Cvent regist...45.4Cvent REST APIThe unified Cvent Platform REST API providing programmatic access to events, contacts, registrations, atten...45.4Cvent SOAP API (Legacy)The Cvent SOAP API is the original legacy API for pushing and pulling data between Cvent and internal syste...45.4ON24 Platform APION24's REST API for automating registration, pulling event and attendee analytics, managing events, and syn...43.9B3 Insurance (Seguros) APIsInsurance-segment registration APIs (V3) covering accepted co-insurance registration, claim registration, d...43.4B3 OTC (Balcão) APIsRegistration, custody, and consultation APIs for the OTC segment - bank funding instruments (CDB, RDB, LCA,...43.4AgentPhone registration APIThe registration API from AgentPhone — 2 operation(s) for registration.43.1Stellar Registration APIThe registration endpoints guide the process for a receiver to verify their identity and link their wallet ...43.0Indeed Employer Registration APIPart of the Candidate Sync APIs, this API allows ATS partners to register employers for Candidate Sync inte...42.7Microsoft .NET Registration APIThe Registration API from Microsoft .NET — 2 operation(s) for registration.41.9Signal Registration APIAccount registration endpoints for creating new Signal accounts via phone number verification.41.0Rentberry Registration APIRegistration39.3
Thin 19 Limited public surface area
Mavenir BYON Registration and Connectivity Management (RACM) APIA Mavenir-authored OpenAPI 3.0.0 definition for Bring Your Own Number (BYON) Registration and Connectivity ...39.2DPLA API Key RegistrationSelf-service API key registration endpoint that issues free access keys via email. Developers submit their ...37.3Synapse Registration APIUser registration and tokens37.2Cvent Registration REST APIThe Cvent Registration REST API is the registration surface of the unified Cvent Platform REST API. It allo...36.9Cvent Registration WebhooksCvent Webhooks deliver real-time push notifications when registration, attendee, session, and meeting reque...36.9NuGet Registration APIPackage registration endpoints for fetching metadata about packages, organized into an index, pages, and le...36.9SPIRE Server APIThe SPIRE Server exposes a gRPC API used by administrators and the SPIRE Agent to manage registration entri...36.8Deliverect Registration APIRegistration operations for the Deliverect Channel API.34.7Cvent Platform REST APIThe Cvent Platform REST API is the unified RESTful interface across the Event Cloud product line, providing...34.5Quantum Art registration APIThe registration API from Quantum Art — 2 operation(s) for registration.33.6ActivityHero Registration & Schedule WebhooksActivityHero's provider integration surface — outbound, HMAC-SHA256-signed JSON webhooks that sync registra...32.7University of Washington Registration APIThe Registration API from University of Washington — 3 operation(s) for registration.31.5Microsoft Package Registration APIThe Registration API from Microsoft Package — 1 operation(s) for registration.30.4Australian Civil Aircraft Register Data FilesThe complete Australian Civil Aircraft Register published as a daily comma-delimited data file (acrftreg.cs...30.0Xfers Registration APIRegister and verify new users.28.2Gigacatalyst Self-Serve Registration APIThe one public, unauthenticated operation Gigacatalyst publishes on its own behalf. A coding agent reads th...27.4Clusters Registration APICheck availability and build registration transaction data26.7Applications APIManage registered Spring Boot applications. Applications are logical groupings of instances sharing the sam...26.6PagBank Account Registration APIEnables platform partners to create and manage third-party PagBank accounts programmatically. Used by marke...26.5
Emerging 9 Early or largely undocumented
Athenian registration APIThe registration API from Athenian — 6 operation(s) for registration.25.7Cosmose AI Deal Hunter Registration APIRegistration, onboarding, invitation and account-lifecycle service behind Cosmose AI's KaiKai / Deal Hunter...23.7EigenDA Churner APIgRPC service that handles operator registration via the Churn RPC. The Churner decides whether new operator...20.3UCSB Students APIsAPIs providing access to student rosters and individual student information including demographic, registra...19.7Annex Cloud Registration as a Service APIRegistration as a Service - hosted member registration and account creation flows that plug into the loyalt...19.5Xcel Energy Registration APIEndDevice registration and provisioning state.18.1Open Podcast Devices APIRegister and manage the devices a user syncs from, allowing servers to track per-device subscription state ...13.9TJX SupplierOne Diversity PortalThe TJX SupplierOne portal enables diverse supplier registration, certification tracking, and quarterly Tie...13.4Whova Registration and Orders API (Modeled)Modeled view of Whova's registration and order surface. The Zapier integration provides a Get Orders trigge...12.5
Minimal 3 Almost no public developer surface
FAA Aircraft RegistryThe FAA Aircraft Registry provides downloadable data on civil aircraft registered in the United States, inc...10.4Phreesia Registration & Demographics APIBidirectional patient registration and demographic data exchange - verify and update patient identity, cont...9.2Clearwave Check-In APISelf-service patient check-in and registration - kiosk, tablet, and mobile intake that captures demographic...6.7

Score breakdown

Frequency
54.8
log-scaled weighted occurrences
Breadth
1.8
spread across providers
Quality lift
45.3
mean composite of providers using it
Cohesion
0.0
strength of nearest seed neighbor

Related tags

Attendees 13 co-occurrences Event Management 16 co-occurrences Virtual Events 8 co-occurrences Exhibitors 6 co-occurrences Conferences 6 co-occurrences Webinars 6 co-occurrences Ticketing 11 co-occurrences Sessions 13 co-occurrences

Where this tag comes from

Provider tag20
Api tag59
Openapi tag18
Openapi op tag57

Cohort brief

Auto-generated

The 66 providers in the APIs.io catalog tagged Registration, scored on the Kin Score. Every figure below is computed from the catalog — nothing here is written.

Providers
66
all scored
Mean Kin Score
37
+16.3 vs catalog 20.7
Mean Agent Readiness
22.4
+12.7 vs catalog 9.7
Spread
6.7–83.3
median 36.9 · σ 16
How the 66 split by band
Exemplar 3Strong 7Developing 18Thin 23Emerging 11Minimal 4
Facet averages, against the whole catalog
FacetThis cohortCatalogDifferenceScored
Contract Quality 41.9 17.5 +24.4 66
Developer Ergonomics 35.8 17.9 +17.9 66
Operational Transparency 26.8 11.3 +15.5 66
Access Clarity 34.9 22.3 +12.6 66
Discoverability 69.9 60.4 +9.5 66
Contract Governance 11.8 6.4 +5.4 66

A facet is averaged over the members that carry it, not over the whole cohort — the “Scored” column is that count. Averaging an absent facet as zero would score our own coverage gaps as the providers’ posture.

What this cohort publishes
ArtifactThis cohortCatalogDifference
MCP server (any) 36% 16% +20
MCP server (first-party) 6% 7% -1
Agent Skills 0% 0% 0
OAuth scopes 26% 9% +17
Security 98% 88% +10
Arazzo workflows 14% 2% +12
Governance rules 26% 13% +13

mcp_pct counts any mcp/ artifact including ones API Evangelist derived from the provider OpenAPI; mcp_first_party_pct counts only servers the provider publishes. Prefer the latter.

Top by Kin Score
  1. 1 Salesforce 83.3
  2. 2 Cvent Event Cloud 69.6
  3. 3 GoTo Webinar 67.8
  4. 4 Avalara 63.6
  5. 5 Consumer Data Right (Energy) 63.4
  6. 6 GitHub 62.4
  7. 7 Cloudflare 62
  8. 8 Oracle Health (Cerner) 60.7
  9. 9 GoFundMe 57.7
  10. 10 WebinarJam 54.9
Top by Agent Readiness
  1. 1 Salesforce 52.2
  2. 2 AgentPhone 48.9
  3. 3 Avalara 46.9
  4. 4 Cvent Event Cloud 46.1
  5. 5 GitHub 45.5
  6. 6 GoFundMe 45.5
  7. 7 Cloudflare 44.5
  8. 8 GoTo Webinar 36.2
  9. 9 IESO 36.2
  10. 10 Demio 35.8
All 66 members of this roster resolve to a scored provider in the catalog.Generated from the catalog build of 25 August 2026, across 26891 providers, using the same computation served by the APIs.io cohort API. Briefs are published for rosters of 5 or more scored providers; below that a distribution is not meaningful.

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